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| Number | Title | Issue Date |
| 7293949 | Spiral drive fastener with friction engageable surface Interference surfaces are constructed on inner transition surfaces between wings of a fastener having a spiral recess. A portion of the transition surface is tapered to provide the interference. A standard driver for a spiral recess will engage the interference surf... | 11/13/2007 |
| 7255522 | Spiral drive fastener with engagement ramp The fastener of this application is designed to facilitate the insertion of rotating power driven tools into the fastener recess. The recess of this fastener generally uses spirally configured driving surfaces and is formed in a counterbore in the upper surface of t... | 08/14/2007 |
| 7013767 | Screwdriver/screw unit A screwdriver element includes two bits, each with a sinuous distal tip end and a screw element includes a head having an X-shaped slot that has sinuous side walls. The bit distal tips have a left-handed shape and a right-handed shape and the side walls of the screw... | 03/21/2006 |
| 6997085 | Threaded-fastener wrenching structure, threaded fastener and wrenching tool A threaded fastener capable of being reduced in size and weight. A pair of side wall surfaces of each of six radially outwardly projecting, torque transmitting portions lie on straight lines passing through the center line in a cross section perpendicular to the cen... | 02/14/2006 |
| 6843627 | Wrenchless blade clamp assembly A wrenchless clamp assembly is provided to secure a tool disc, such as a circular saw blade, to a shaft of a power tool. The blade clamp assembly includes an outer flange positionable against an outer side of the blade and a manually tightenable click bolt that incl... | 01/18/2005 |
| 6802680 | Torque limiting fastener A torque limiting fastener includes a fastener body and a fastener head insert configured to fit within the fastener body and to transfer a limited amount of torque to the body. The fastener body has a head with a bore formed therein and having a first set of protru... | 10/12/2004 |
| 6746186 | Boring tool A boring tool is proposed which has a cutting portion at one end thereof, a driver engaging portion at the other end thereof, a shank arranged between the cutting portion and the driver engaging portion. The shank is formed with a helical groove for discharging cutt... | 06/08/2004 |
| 6736580 | Lobed drive for hi-lite fastener A drive socket for a male threaded fastener includes a plurality of rounded lobes of equal radius which are located equidistant from the center of the fastener and an equal distance from each other. The drive socket also includes flat surfaces located opposite the l... | 05/18/2004 |
| 6719511 | High security fastener constructions A series of high security fastener constructions feature rotatable anti-theft shrouds mounted on locking wheel nuts and wheel bolts designed for vehicular wheels. Each construction features (1) a fastener body having a first body end adapted to accommodate a key rec... | 04/13/2004 |
| 6682283 | Sidewalk bolt A sidewalk bolt is provided. The bolt includes a head portion, a threaded shaft portion extending perpendicularly outward from a first side of the head portion, and a socket head recess well formed within a second side of the head portion for use in drivi... | 01/27/2004 |
| 6655888 | Lobed drive for hi-lite fastener A drive socket for a male threaded fastener includes three rounded lobes of equal radius which are located equidistant from the center of the fastener and 120° apart from each other. The drive socket also includes three flat surfaces, each flat surface b... | 12/02/2003 |
| 6626067 | Retention socket geometry variations A device includes a body having a plurality of alternating drive regions and corner regions arranged about a central axis for cooperation to define a socket recess having an open outer end and an inner end. Each drive region has a drive surface disposed t... | 09/30/2003 |
| 6609867 | Anti-loosening nut assembly An anti-loosening nut assembly is composed of an upper nut 3 and a lower nut 2 that engage with each other in an eccentric manner to afford the so-called `wedging` effect of surely inhibiting them from loosening themselves. The upper nut 3 has one or more... | 08/26/2003 |
| 6592313 | Pull stud bolt A pull stud bolt has two pairs of wrench engaging faces formed on a flange thereof. The adjacent wrench engaging faces make an angle of 90 deg with each other. Alternatively, three pairs of wrench engaging faces are formed on the flange. The adjacent wren... | 07/15/2003 |
| 6572316 | Screw with thin head A screw with a thin head comprising a screw head (2) and a shank (4), and with its top (5) forming a circular arc of a large radius has an unthreaded part (20) tapered down between the bearing surface (6) and the thread (3) and has a radius (21) connected... | 06/03/2003 |
| 6540460 | Tamper indicating tool engaging head A fastener having a tamper-evident sleeve thereon. The fastener has a shank and a double-headed driving portion that is integrally formed with the shank. The double-headed portion includes an outer head for driving the fastener into a work piece or nut an... | 04/01/2003 |
| 6428354 | Coaxial connector fastening system A coaxial connector assembly for mounting in an aperture in a stiff plate includes a barrel having a shoulder at its rear end for engaging an interior surface of the mounting plate and an external screw thread intermediate the front and rear ends of the b... | 08/06/2002 |
| 6402449 | Screw with an improved head Disclosed is a screw with an improved head, in which a stress-relieving notch is formed at each corner of a driving recess on the screw head. The stress-relieving notch is in an equal arcuate shape. Apart from the well known slotted or Phillips one, the d... | 06/11/2002 |
| 6364617 | Toolless assembled fan An air circulating fan wherein the fan components are shipped disassembled. All of the fasteners used to assemble the fan components may be operated without tools, utilizing thumb screws and the like wherein the fan is capable of a "toolless" assembly. A ... | 04/02/2002 |
| 6364585 | Torque-controllable screw with knob In the screw of the present invention, a screw shaft and knob have a torque controller which rotates the screw shaft and the knob together until a rotating torque between the screw shaft and the knob reaches a predetermined level, and slips the knob towar... | 04/02/2002 |
| 6328512 | Tamper indicating tool engaging head The present invention provides a novel fastener having a tamper indicating tool engaging drive head. The fastener has a shank including a threaded shank portion. The fastener also has a double-headed driving portion that is integrally formed with the shan... | 12/11/2001 |
| 6328517 | Combination sidewalk bolt A combination sidewalk bolt is provided. The bolt includes a head portion, a threaded shaft portion extending perpendicularly outward from a first side of the head portion, a Phillips head recess well formed within a second side of the head portion for us... | 12/11/2001 |
| 6305890 | Covering device for nut and covering device for bolt head A nut covering device comprises the following: a cover assembly, including an inner cover, outer cover, and a first constraining mechanism; a second constraining mechanism; and a third constraining mechanism. The first constraining mechanism constrains so... | 10/23/2001 |
| 6302632 | Screw with compound recesses Screws with compound threads. Each of the screws includes a head with a compound drive recess therein. The compound drive recess for the screw driver(or the screw drive bit) is shaped to have four symmetrical fan-shaped portions, a center square portion w... | 10/16/2001 |
| 6293745 | Screw with an improved head structure and punch for forming same A screw includes a shank and a head. The head includes a driving socket having a long slot that extends axially into the head to a depth. A first short recess is defined in a bottom wall defining the long slot and extended along a longitudinal axis of the... | 09/25/2001 |
| 6186718 | Threaded fastener having a head with a triangle centerpost within a triangle recess The fastener of the present invention has a head integrally formed with a threaded shank. The face of the head has a triangular recess with a triangular centerpost extending upward from the recess. The recess has three sides forming corners, and the cente... | 02/13/2001 |
| 6164887 | Screw for joining thin workpieces A screw comprises a shank (2) and a head provided with a tool drive (6). The shank is provided with a thread (4), and at its free end has a boring part (5). The head (3), measured in axial direction of the screw (1), has a height (LK), which is smaller th... | 12/26/2000 |
| 6158832 | Fastener with alignment and spacing features A combination fastener for attaching a cellular phone base station to a mounting bracket includes alignment and spacing features. The alignment features ensure that a door of the base station will be properly aligned when the door closed. The spacing feat... | 12/12/2000 |
| 6158094 | Mechanical clamp controlling A mechanical clamp used to secure hoses includes an elongated band. The band surrounds a central region and has a sequence of slots along its length. An adjustment screw has a hexagonal head that rotates about a longitudinal axis and has a thread that ext... | 12/12/2000 |
| 6102642 | Screw head A drilling tapping screw includes a head engageable with rotary fastening tool, and a shank extending downward from the head and having a lower end having with a drilling tip, including a tapping and fastening thread defined from the end face thereof to t... | 08/15/2000 |
| 6092968 | Fastener structure A fastener comprising an elongated body having a longitudinal axis and an outer surface and first and second ends, a separate seating configuration on the first end, a ridge extending circumferentially about the body adjacent to the seating configuration,... | 07/25/2000 |
| 6077267 | Absorbable bone screw and tool for its insertion A bone screw comprises a threaded shank having an axis of rotation. A head is integral with the shank, and the head includes a surface disposed generally normal to the axis. A plurality of drive receivers are disposed about the surface wholly remote from ... | 06/20/2000 |
| 6045311 | Bolt, nut, and wrench in taper design for turning the bolt and the nut A nut is provided having a tapered, polygonal nut body, an axial coupling hole defined within the nut body, an inner thread provided on the inside of the nut body around the axial coupling hole, the nut body having a tapered, polygonal outside wall axiall... | 04/04/2000 |
| 6036419 | Fastener structure A fastener comprising an elongated body having a longitudinal axis and an outer surface and first and second ends, a seating configuration on the first end, a ridge extending circumferentially about the body adjacent to the seating configuration, a plural... | 03/14/2000 |
| 5957645 | Spiral drive system for threaded fasteners A spiral drive system for threaded fasteners includes driver-engageable surfaces on the head end of the fastener in which at least some of the driver-engageable surfaces are defined by a spiral segment configured to maximize torque transmission while spre... | 09/28/1999 |
| 5919020 | Screw A screw, particularly a wood screw present a combination of a threaded cylindric stem (10) merging, over an inversely frustoconical part (16) with an enlarged diameter cylindric portion (20) which is integral with an underside of a large diameter washer s... | 07/06/1999 |
| 5913650 | Fastening device with security feature 216-type screws and KS-type screws are two types of fastening devices typically used to restrict access to the chambers of building entrance protector (BEP) enclosures used in telecommunications applications. Access to such chambers is limited to those us... | 06/22/1999 |
| 5904008 | Gravestone assembly The invention concerns a gravestone assembly comprising a base with a gravestone detachably secured thereon by a securing arrangement. Disposed in the base is a threaded spindle which, when a gravestone is not mounted on the base is pretensioned by a spri... | 05/18/1999 |
| 5851096 | Racheted nut assembly A ratcheted nut assembly is provided to enable a nut to be tightened onto a bolt in a limited area. The ratcheted nut assembly includes an internally threaded nut that has radially extending teeth on its outer surface. The nut is held rotatably captive wi... | 12/22/1998 |
| 5833419 | Angularly accessible head for threaded connector The angularly accessible head for a threaded connector comprises a spherical structure having a centered slot therein, the slot having a bottom surface or wall in the shape of an inverted V, with a center point thereof extending toward and terminating bel... | 11/10/1998 |
